CN102411017A - TDR (time domain reflection) testing device for testing soil column and using method thereof - Google Patents
TDR (time domain reflection) testing device for testing soil column and using method thereof Download PDFInfo
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- CN102411017A CN102411017A CN2011102082892A CN201110208289A CN102411017A CN 102411017 A CN102411017 A CN 102411017A CN 2011102082892 A CN2011102082892 A CN 2011102082892A CN 201110208289 A CN201110208289 A CN 201110208289A CN 102411017 A CN102411017 A CN 102411017A
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Abstract
The invention discloses a TDR (time domain reflection) testing device for testing a soil column, and the device mainly comprises a TDR sensor soil sample cylinder (1), a channel selector (8), a TDR testing instrument (9) and a computer (10), and is characterized in that the TDR sensor soil sample cylinder (1) is provided with a tracer solution inflow port (2) and a tracer solution outflow port (3), a tracer solution inflow-end TDR sensor (4) is arranged below the tracer solution inflow port (2), a tracer solution outflow-end TDR sensor (5) is arranged above the tracer solution outflow port (3), and the tracer solution inflow-end TDR sensor (4) and the tracer solution outflow-end TDR sensor (5) are respectively connected with the channel selector (8) through a cable (6) and a cable (7). The invention simultaneously provides a using method of the device. The device has the characteristics of accuracy, convenience, fastness and environmental friendliness, and is widely applicable to the technical field of environmental geotechnical engineering.
Description
Technical field
The invention belongs to the technical field of environmental geotechnical, specifically, relate to a kind of TDR Test device and method of application that is used for soil-column test.
Background technology
Owing to reasons such as industrial pollution, sanitary sewage discharging and the excessive use of agricultural production chemical fertilizer cause soil and underground water to suffer severe contamination; Along with rainfall and phreatic flowing; Many pollution compositions move in soil thereupon; And progressively corrode structure foundation and basis, the safety of buildings has been caused grave danger.Therefore, the important topic that the migration of solute in soil become environmental geotechnical is polluted in research, and this prevents accordingly that for how to take blending anti-corrosion measure all has great importance.Soil-column test is the main method of carrying out soil solute transport research, is the important means that obtains breakthrough curve.So-called earth pillar method; At first soil is packed in the soil sample tube; Secondly with deionized water saturated soil appearance; Use the continuous constant injection soil sample of tracer agent solution then, through the relative concentration and the time relation curve of soil sample tube outlet, this curve promptly was a breakthrough curve when last quantitative test tracer agent solution was migrated in soil sample.According to breakthrough curve; Can draw the key parameter (like dispersion coefficient, pore water mean flow rate, delay factor etc.) of solute transfer; These parameters are comprehensive physical quantitys of characterized medium hydrodynamics characteristic, are the research solable matter moves transformation rule and prediction and evaluation pollutant spatial and temporal distributions in porous medium bases.Therefore, the key that obtains breakthrough curve is exactly the solute relative concentration that obtains soil sample tube outlet, and the method for the chemical experiment that is widely used at present obtains relative concentration.This has following deficiency: (1) chemical experiment receives the influence of manual operation bigger, so its precision is relatively poor; (2) chemical test time of obtaining the result obviously lags behind, can not be along with the process simultaneous observation of solute transfer; (3) each data point all need be collected abundant solution in soil sample tube outlet and carried out concentration analysis, and the similar repetitive operation of whole experiment can the expensive time, and efficient is very low, and the limited amount of data point has also increased the probability of error; (4) contact chemical reagent for a long time and be unfavorable for health.
In order to solve the problems of the technologies described above, the present invention provides a kind of TDR Test device and method of application of being applicable to soil-column test of accurate, convenient, environmental protection, and its technical scheme is following:
A kind of TDR Test device that is used for soil-column test; Mainly comprise TDR sensor soil sample tube 1, channel to channel adapter 8, TDR Test view 9 and computing machine 10; Said TDR sensor soil sample tube 1 is provided with tracer agent flow of solution inbound port 2 and tracer agent flow of solution outbound port 3; Tracer agent flow of solution inbound port 2 belows are provided with tracer agent solution and flow into end TDR sensor 4; Tracer agent flow of solution outbound port 3 tops are provided with tracer agent solution outflow end TDR sensor 5, and tracer agent solution flows into end TDR sensor 4, tracer agent solution outflow end TDR sensor 5 is connected with channel to channel adapter 8 through cable 6, cable 7 respectively.
Further preferred, said tracer agent solution flows into end TDR sensor 4 and comprises 3 probes 11,12,13, and tracer agent solution outflow end TDR sensor 5 comprises 3 probes 14,15,16.
Further preferred, the number that said tracer agent solution flows into end TDR sensor 4 and tracer agent solution outflow end TDR sensor 5 is respectively 1.
The present invention can realize in the following manner that also the number that said tracer agent solution flows into end TDR sensor 4 and tracer agent solution outflow end TDR sensor 5 is respectively 2,2 TDR transducer vertical arrangements.
The present invention can realize in the following manner that also the number that said tracer agent solution flows into end TDR sensor 4 and tracer agent solution outflow end TDR sensor 5 is respectively 3,3 mutual angle 120 degree of TDR sensor.
Further preferred, the material of said probe (11,12,13,14,15,16) is stainless steel.
The present invention can realize in the following manner that also the TDR sensor between said tracer agent flow of solution inbound port 2 and the tracer agent flow of solution outbound port 3 is greater than 2 layers.
A kind of TDR Test device and method of application that is used for soil-column test of the present invention, the material of said TDR sensor soil sample tube 1 is an organic glass.
A kind of method of application that is used for the TDR Test device of soil-column test may further comprise the steps:
A. soil is packed into behind the TDR sensor soil sample tube 1 according to requirement of experiment; At first injecting deionized water from tracer agent flow of solution inbound port 2 makes soil sample saturated; Tracer agent solution inflow this moment end TDR sensor 4 is through probe 11,12,13 emissions and receive reflected signal, and through cable 6 input channel selector switchs 8, channel to channel adapter 8 passes to TDR Test appearance 9 acquisition reflection configurations to reflected signal; Be input in the computing machine 10 computing machine 1 then) according to formula Z
Min=Z
T, min-Z
Cable, Z
T, min=Z
0(1+ ρ
Min)/(1-ρ
Min), ρ
Min=(V
Min-V
0)/V
0Computing obtains the Z of soil sample
MinValue and the computing of storage products for further;
B. inject tracer agent solution from tracer agent flow of solution inbound port 2 then; Tracer agent solution flows from top to bottom, flows out from tracer agent flow of solution outbound port 3 gradually, along with the increase of moment t; The tracer agent solution concentration of tracer agent flow of solution outbound port 3 increases gradually; This moment, tracer agent solution outflow end TDR sensor 5 was launched and the reception reflected signal through probe 14,15,16, and through connecting the cable 7 input channel selector switchs 8 of tracer agent solution outflow end TDR sensor 5, channel to channel adapter 8 passes to TDR Test appearance 9 to reflected signal and obtains reflection configuration; Be input to then in the computing machine 10, computing machine 10 is according to formula Z
t=Z
T, t-Z
Cable, Z
T, t=Z
0(1+ ρ
t)/(1-ρ
t), ρ
t=(V
t-V
0)/V
0Computing obtains the Z of soil sample
tValue and the computing of storage products for further;
C. along with tracer agent solution flows from top to bottom; The tracer agent solution concentration of tracer agent flow of solution outbound port 3 reaches maximal value and tends towards stability; The tracer agent solution concentration of tracer agent flow of solution outbound port 3 constantly changes; This moment, tracer agent solution outflow end TDR sensor 5 was launched and the reception reflected signal through probe 14,15,16, and through connecting the cable 7 input channel selector switchs 8 of sensor 5, channel to channel adapter 8 passes to TDR Test appearance 9 to reflected signal and obtains reflection configuration; Be input to then in the computing machine 10, computing machine 10 is according to formula Z
Max=Z
T, max-Z
Cable, Z
T, max=Z
0(1+ ρ
Max)/(1-ρ
Max), ρ
Max=(V
Max-V
0)/V
0Computing obtains the Z of soil sample
MaxValue and the computing of storage products for further;
Beneficial effect of the present invention:
A kind of TDR Test device that is used for soil-column test provided by the invention and method of application are with respect to traditional device and chemical analysis; Has advantage quick, accurate, cheap, environmental protection; For the earth pillar shop experiment provides another kind of brand-new proving installation and method, and establish very favorable basis for site test.
Description of drawings
Fig. 1 is a kind of structural drawing that is used for the TDR Test device of soil-column test of the present invention;
Fig. 2 is used for soil-column test for the present invention the is a kind of described tracer agent solution of TDR Test device flows into end TDR sensor;
Fig. 3 is a kind of described tracer agent solution of TDR Test device outflow end TDR sensor that is used for soil-column test of the present invention.
Embodiment
Below in conjunction with accompanying drawing and specific embodiment technical scheme of the present invention is done explanation in further detail.
With reference to Fig. 1; A kind of TDR Test device that is used for soil-column test; Mainly comprise TDR sensor soil sample tube 1, channel to channel adapter 8, TDR Test view 9 and computing machine 10; Said TDR sensor soil sample tube 1 is provided with tracer agent flow of solution inbound port 2 and tracer agent flow of solution outbound port 3; Tracer agent flow of solution inbound port 2 belows are provided with tracer agent solution and flow into end TDR sensor 4, and tracer agent flow of solution outbound port 3 tops are provided with tracer agent solution outflow end TDR sensor 5, and tracer agent solution flows into end TDR sensor 4, tracer agent solution outflow end TDR sensor 5 is connected with channel to channel adapter 8 through cable 6, cable 7 respectively.
Further preferred, said tracer agent solution flows into end TDR sensor 4 and comprises 3 probes 11,12,13, and tracer agent solution outflow end TDR sensor 5 comprises 3 probes 14,15,16.
With reference to Fig. 2, Fig. 3, the number that said tracer agent solution flows into end TDR sensor 4 and tracer agent solution outflow end TDR sensor 5 is respectively 1.
The present invention can realize in the following manner that also the number that said tracer agent solution flows into end TDR sensor 4 and tracer agent solution outflow end TDR sensor 5 is respectively 2,2 TDR transducer vertical arrangements.
The present invention can realize in the following manner that also the number that said tracer agent solution flows into end TDR sensor 4 and tracer agent solution outflow end TDR sensor 5 is respectively 3,3 mutual angle 120 degree of TDR sensor.
Further preferred, the material of said probe (11,12,13,14,15,16) is stainless steel.
The present invention can realize in the following manner that also the TDR sensor between said tracer agent flow of solution inbound port 2 and the tracer agent flow of solution outbound port 3 is greater than 2 layers.
A kind of TDR Test device and method of application that is used for soil-column test of the present invention, the material of said TDR sensor soil sample tube 1 is an organic glass.
The present invention is a kind of, and to be used for the principle of work of TDR Test device and method of application of soil-column test following: conductivity is a basic physical property of soil, and is closely related with ionic type and concentration in the soil pore water.When ion concentration is low, can ignore the interaction of ion, at this moment the conductivity of soil pore water
PwLinear with the concentration c of pore water, the conductivity of soil
sAlso linear with the concentration c of pore water.Under this basic premise, the relative concentration when the tracer agent flow of solution goes out soil sample tube outlet in the soil-column test can equivalence be:
Wherein: c
tBe the concentration of t when constantly the tracer agent flow of solution goes out soil sample tube outlet, c
0Be tracer agent initial concentration of solution, c
iBe the original concentration of soil pore water, σ
tFor the conductivity of t soil when constantly the tracer agent flow of solution goes out soil sample tube outlet (with c
tCorresponding), σ
MaxFor the maximum conductivity of soil (with c
0Corresponding), σ
MinFor the minimum conductivity of soil (with c
iCorresponding); Z
tFor the soil impedance of t when constantly the tracer agent flow of solution goes out soil sample tube outlet (with c
tCorresponding), Z
MaxFor the maximum impedance of soil (with c
0Corresponding), Z
MinFor the minimum impedance of soil (with c
iCorresponding).
Z
t＝Z
T，t-Z
cable (2)
Z
max＝Z
T，max-Z
cable (3)
Z
min＝Z
T，min-Z
cable (4)
Wherein, Z
T, tBe the measuring system resulting impedance of t when constantly the tracer agent flow of solution goes out soil sample tube outlet, Z
T, maxBe the maximal value of measuring system resulting impedance, Z
T, minBe the minimum value of measuring system resulting impedance, Z
CableImpedance for cable and connector lug.
Z
T，t＝Z
0(1+ρ
t)/(1-ρ
t) (5)
Z
T，max＝Z
0(1+ρ
max)/(1-ρ
max) (6)
Z
T，min＝Z
0(1+ρ
min)/(1-ρ
min) (7)
Wherein, Z
0Be the characteristic impedance of cable, ρ
t, ρ
Max, ρ
MinBe respectively and Z
T, t, Z
T, max, Z
T, minCorresponding voltage reflection coefficient.
ρ
t＝(V
t-V
0)/V
0 (8)
ρ
max＝(V
max-V
0)/V
0 (9)
ρ
min＝(V
min-V
0)/V
0 (10)
Wherein, V
0Be incident voltage, V
t, V
Max, V
MinBe respectively and c
t, c
0, c
iThe corresponding final burning voltage of reflection configuration.Thus it is clear that, as long as test out V
0, V
t, V
Max, V
Min, just can be according to formula (1)～(10) calculate the relative concentration of tracer agent solution, and V
0, V
t, V
Max, V
MinTest can realize easily according to following apparatus and method.
TDR (Time Domain Reflectometry; Time domain reflectometry) potential pulse of tester emission is propagated in probe with form of electromagnetic wave; When electromagnetic wave when the tat probe terminal runs into soil, the dump energy of pulse will be returned through probe reflection, reflected signal is received and is stored in the computing machine by the TDR Test appearance; Computing machine can obtain the above data of tested soil according to the TDR reflection configuration, and finally obtains relative density through computing.
A kind of method of application that is used for the TDR Test device of soil-column test may further comprise the steps:
Soil is packed into according to requirement of experiment behind the TDR sensor soil sample tube 1; At first injecting deionized water from tracer agent flow of solution inbound port 2 makes soil sample saturated; Tracer agent solution inflow this moment end TDR sensor 4 is through probe 11,12,13 emissions and receive reflected signal, and through cable 6 interface channel selector switchs 8, channel to channel adapter 8 passes to TDR Test appearance 9 acquisition reflection configurations to reflected signal; Be input to then in the computing machine 10, computing machine 10 obtains the Z of soil sample according to formula (4), (7), (10) computing
MinValue and the computing of storage products for further.
Inject tracer agent solution from tracer agent flow of solution inbound port 2 then; Tracer agent solution flows from top to bottom, flows out from tracer agent flow of solution outbound port 3 gradually, along with the increase of moment t; The tracer agent solution concentration of tracer agent flow of solution outbound port 3 increases gradually; This moment, tracer agent solution outflow end TDR sensor 5 was launched and the reception reflected signal through probe 14,15,16, and through cable 7 interface channel selector switchs 8, channel to channel adapter 8 passes to TDR Test appearance 9 to reflected signal and obtains reflection configurations; Be input to then in the computing machine 10, computing machine 10 obtains the Z of soil sample according to formula (2), (5), (8) computing
tValue and the computing of storage products for further.
Along with tracer agent solution flows from top to bottom; The tracer agent solution concentration of tracer agent flow of solution outbound port 3 reaches maximal value and tends towards stability; This moment, tracer agent solution outflow end TDR sensor 5 was launched and the reception reflected signal through probe 14,15,16, and through cable 7 interface channel selector switchs 8, channel to channel adapter 8 passes to TDR Test appearance 9 to reflected signal and obtains reflection configurations; Be input to then in the computing machine 10, computing machine 10 obtains the Z of soil sample according to formula (3), (6), (9) computing
MaxValue and the computing of storage products for further.
At last, computing machine 10 utilizes the Z of storage
Min, Z
Max, Z
t, just can calculate any t relative concentration of TDR sensor soil sample tube 1 outlet tracer agent solution constantly according to formula (1), breakthrough curve further draws.
Embodiments of the invention are not limited thereto, and the equivalence replacement of alternate manner all falls within protection scope of the present invention.
Claims (9)
1. TDR Test device that is used for soil-column test; Mainly comprise TDR sensor soil sample tube (1), channel to channel adapter (8), TDR Test view (9) and computing machine (10); It is characterized in that; Said TDR sensor soil sample tube (1) is provided with tracer agent flow of solution inbound port (2) and tracer agent flow of solution outbound port (3); Tracer agent flow of solution inbound port (2) below is provided with tracer agent solution and flows into end TDR sensor (4); Tracer agent flow of solution inbound port (3) top is provided with tracer agent solution outflow end TDR sensor (5), and tracer agent solution flows into end TDR sensor (4), tracer agent solution outflow end TDR sensor (5) is connected with channel to channel adapter (8) through cable (6), cable (7) respectively.
2. the TDR Test device that is used for soil-column test according to claim 1; It is characterized in that; Said tracer agent solution flows into end TDR sensor (4) and comprises 3 probes (11,12,13), and tracer agent solution outflow end TDR sensor TDR sensor 5 comprises 3 probes (14,15,16).
3. the TDR Test device that is used for soil-column test according to claim 2 is characterized in that, the number that said tracer agent solution flows into end TDR sensor (4) and tracer agent solution outflow end TDR sensor (5) is respectively 1.
4. the TDR Test device that is used for soil-column test according to claim 2 is characterized in that, the number that said tracer agent solution flows into end TDR sensor (4) and tracer agent solution outflow end TDR sensor (5) is respectively 2,2 TDR transducer vertical arrangements.
5. the TDR Test device that is used for soil-column test according to claim 2; It is characterized in that; The number that said tracer agent solution flows into end TDR sensor (4) and tracer agent solution outflow end TDR sensor (5) is respectively 3,3 mutual angle 120 degree of TDR sensor.
6. the TDR Test device that is used for soil-column test according to claim 2 is characterized in that, the material of said probe (11,12,13,14,15,16) is stainless steel.
7. the TDR Test device that is used for soil-column test according to claim 1 is characterized in that, the TDR sensor between said tracer agent flow of solution inbound port 2 and the tracer agent flow of solution outbound port 3 is greater than 2 layers.
8. according to each described TDR Test device that is used for soil-column test of claim 1-7, it is characterized in that the material of said TDR sensor soil sample tube is an organic glass.
9. the described method of application that is used for the TDR Test device of soil-column test of claim 1-8 is characterized in that, may further comprise the steps:
A. soil is packed into behind the TDR sensor soil sample tube (1) according to requirement of experiment; At first injecting deionized water from tracer agent flow of solution inbound port (2) makes soil sample saturated; Tracer agent solution inflow this moment end TDR sensor 4 is through probe (11,12,13) emission and receive reflected signal, and through cable (6) input channel selector switch (8), channel to channel adapter (8) passes to TDR Test appearance (9) acquisition reflection configuration to reflected signal; Be input to then in the computing machine (10), computing machine (10) is according to formula Z
Min=Z
T, min-Z
Cable, Z
T, min=Z
0(1+ ρ
Min)/(1-ρ
Min), ρ
Min=(V
Min-V
0)/V
0Computing obtains the Z of soil sample
MinValue and the computing of storage products for further;
B. inject tracer agent solution from tracer agent flow of solution inbound port (2) then; Tracer agent solution flows from top to bottom, flows out from tracer agent flow of solution outbound port (3) gradually, along with the increase of moment t; The tracer agent solution concentration of tracer agent flow of solution outbound port (3) increases gradually; Tracer agent solution outflow end TDR sensor this moment (5) is through probe (14,15,16) emission and receive reflected signal, and through connecting cable (7) the input channel selector switch (8) of tracer agent solution outflow end TDR sensor (5), channel to channel adapter (8) passes to TDR Test appearance (9) to reflected signal and obtains reflection configuration; Be input to then in the computing machine (10), computing machine (10) is according to formula Z
t=Z
T, t-Z
Cable, Z
T, t=Z
0(1+ ρ
t)/(1-ρ
t), ρ
t=(V
t-V
0)/V
0Computing obtains the Z of soil sample
tValue and the computing of storage products for further;
C. along with tracer agent solution flows from top to bottom; The tracer agent solution concentration of tracer agent flow of solution outbound port (3) reaches maximal value and tends towards stability; The tracer agent solution concentration of tracer agent flow of solution outbound port (3) constantly changes; Tracer agent solution outflow end TDR sensor this moment (5) is through probe (14,15,16) emission and receive reflected signal, and through connecting the cable 7 input channel selector switchs (8) of sensor 5, channel to channel adapter (8) passes to TDR Test appearance (9) to reflected signal and obtains reflection configuration; Be input to then in the computing machine (10), computing machine (10) is according to formula Z
Max=Z
T, max-Z
Cable, Z
T, max=Z
0(1+ ρ
Max)/(1-ρ
Max), ρ
Max=(V
Max-V
0)/V
0Computing obtains the Z of soil sample
MaxValue and the computing of storage products for further;
D. computing machine (10) utilizes the Z of storage
Min, Z
Max, Z
t, according to formula
Just can calculate any t relative concentration of TDR sensor soil sample tube (1) outlet tracer agent solution constantly, breakthrough curve further draws.
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|---|---|---|---|
| CN2011102082892A CN102411017B (en) | 2011-07-25 | 2011-07-25 | TDR (time domain reflection) testing device for testing soil column and using method thereof |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011102082892A CN102411017B (en) | 2011-07-25 | 2011-07-25 | TDR (time domain reflection) testing device for testing soil column and using method thereof |
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| Publication Number | Publication Date |
|---|---|
| CN102411017A true CN102411017A (en) | 2012-04-11 |
| CN102411017B CN102411017B (en) | 2013-11-13 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011102082892A Expired - Fee Related CN102411017B (en) | 2011-07-25 | 2011-07-25 | TDR (time domain reflection) testing device for testing soil column and using method thereof |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105021547A (en) * | 2015-07-08 | 2015-11-04 | 浙江大学 | Method for measuring nonlinear isothermal-adsorption curve of cohesive soil |
| CN108692973A (en) * | 2018-05-29 | 2018-10-23 | 太原理工大学 | A kind of drilling TDR device and methods suitable for special undisturbed soil |
| CN114235860A (en) * | 2021-11-29 | 2022-03-25 | 北京师范大学 | Method for quantifying solute transport in soil by CT scanning technology and ion tracing technology |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE19800887A1 (en) * | 1998-01-13 | 1999-07-15 | Kai Uwe Dr Totsche | Column measuring parameters associated with liquid transport in porous media |
| CN1793881A (en) * | 2005-12-20 | 2006-06-28 | 中国科学院水利部水土保持研究所 | Automatic determination device of soil moisture solute moving parameter |
| CN101140213A (en) * | 2007-10-11 | 2008-03-12 | 西北农林科技大学 | Full-automatic negative pressure infiltration measuring device |
| JP2009204601A (en) * | 2008-02-27 | 2009-09-10 | Jiaotong Univ | Apparatus and method for measuring suspended solid concentration utilizing time domain reflectometry |
| CN101738360A (en) * | 2009-10-16 | 2010-06-16 | 同济大学 | Time domain reflection unsaturated permeameter and method for measuring unsaturated permeability coefficient |
-
2011
- 2011-07-25 CN CN2011102082892A patent/CN102411017B/en not_active Expired - Fee Related
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE19800887A1 (en) * | 1998-01-13 | 1999-07-15 | Kai Uwe Dr Totsche | Column measuring parameters associated with liquid transport in porous media |
| CN1793881A (en) * | 2005-12-20 | 2006-06-28 | 中国科学院水利部水土保持研究所 | Automatic determination device of soil moisture solute moving parameter |
| CN101140213A (en) * | 2007-10-11 | 2008-03-12 | 西北农林科技大学 | Full-automatic negative pressure infiltration measuring device |
| JP2009204601A (en) * | 2008-02-27 | 2009-09-10 | Jiaotong Univ | Apparatus and method for measuring suspended solid concentration utilizing time domain reflectometry |
| CN101738360A (en) * | 2009-10-16 | 2010-06-16 | 同济大学 | Time domain reflection unsaturated permeameter and method for measuring unsaturated permeability coefficient |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105021547A (en) * | 2015-07-08 | 2015-11-04 | 浙江大学 | Method for measuring nonlinear isothermal-adsorption curve of cohesive soil |
| CN108692973A (en) * | 2018-05-29 | 2018-10-23 | 太原理工大学 | A kind of drilling TDR device and methods suitable for special undisturbed soil |
| CN108692973B (en) * | 2018-05-29 | 2020-12-15 | 太原理工大学 | Drilling TDR device and method suitable for hard undisturbed soil |
| CN114235860A (en) * | 2021-11-29 | 2022-03-25 | 北京师范大学 | Method for quantifying solute transport in soil by CT scanning technology and ion tracing technology |
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|---|---|
| CN102411017B (en) | 2013-11-13 |
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